border-1px($color) {
    position: relative;

    &:after {
        display: block;
        position: absolute;
        left: 0;
        bottom: 0;
        border-top: 1px solid $color;
        content: ' ';
        width: 100%;
    }
}

border-none(){
    &:after{
        display:none;
    }
}


bg-image($url){
background-image: url($url + "@2x.png");
@media (-webkit-min-device-pixel-ratio:3),(min-device-pixel-ratio:3){
    background-image: url($url + "@2x.png");
}

}